# BeaverCheck Audit Report — https://www.redfin.com **Date:** April 7, 2026 **URL:** https://www.redfin.com **Overall Grade:** D (69/100) **Report:** https://beavercheck.com/results/6226730c-a9b9-15ba-a1e6-f0dca26355fa ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** Cookie 'RF_CORVAIR_LAST_VERSION' is missing the Secure flag — Security > Cookie Security 3. **[CRITICAL]** Cookie 'RF_TRAFFIC_SEGMENT' is missing the Secure flag — Security > Cookie Security 4. **[CRITICAL]** Cookie 'RF_VISITED' is missing the Secure flag — Security > Cookie Security 5. **[CRITICAL]** HSTS header is missing — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 26 | | Accessibility | 81 | | Best Practices | 77 | | SEO | 92 | --- ## Security ### Security Headers (F — 30/100) *4 of 10 headers properly configured* - **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year. - **[PASS]** X-Content-Type-Options is properly configured - **[PASS]** X-Frame-Options is properly configured - **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter. - **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features. - **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis. - **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'. - **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers. - **[PASS]** X-Powered-By header is not present - **[PASS]** Server header is present without version info ### Content Security Policy (F — 0/100) *No enforcing CSP policy found* - **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading. ### TLS & Certificates (A+ — 100/100) *TLS 1.3, 7 checks passed* - **[PASS]** TLS 1.3 is used - **[PASS]** Strong cipher suite is used - **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance. - **[PASS]** Certificate is valid (expires in 175 days) - **[PASS]** Certificate chain has 3 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 98 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (D — 40/100) *7 cookies analyzed, 8 checks passed* - **[CRITICAL]** Cookie 'RF_CORVAIR_LAST_VERSION' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception. - **[WARNING]** Cookie 'RF_CORVAIR_LAST_VERSION' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[WARNING]** Cookie 'RF_CORVAIR_LAST_VERSION' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. - **[PASS]** Cookie 'RF_BROWSER_ID' has the Secure flag - **[WARNING]** Cookie 'RF_BROWSER_ID' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[PASS]** Cookie 'RF_BROWSER_ID' has SameSite=None - **[CRITICAL]** Cookie 'RF_TRAFFIC_SEGMENT' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception. - **[WARNING]** Cookie 'RF_TRAFFIC_SEGMENT' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[WARNING]** Cookie 'RF_TRAFFIC_SEGMENT' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. - **[CRITICAL]** Cookie 'RF_VISITED' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception. - **[WARNING]** Cookie 'RF_VISITED' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[WARNING]** Cookie 'RF_VISITED' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. - **[PASS]** Cookie 'RF_BROWSER_ID' has the Secure flag - **[WARNING]** Cookie 'RF_BROWSER_ID' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[PASS]** Cookie 'RF_BROWSER_ID' has SameSite=None - **[PASS]** Cookie 'RF_BROWSER_ID_GREAT_FIRST_VISIT_TIMESTAMP' has the Secure flag - **[WARNING]** Cookie 'RF_BROWSER_ID_GREAT_FIRST_VISIT_TIMESTAMP' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[PASS]** Cookie 'RF_BROWSER_ID_GREAT_FIRST_VISIT_TIMESTAMP' has SameSite=None - **[PASS]** Cookie 'RF_BID_UPDATED' has the Secure flag - **[WARNING]** Cookie 'RF_BID_UPDATED' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[PASS]** Cookie 'RF_BID_UPDATED' has SameSite=None --- ## Advanced Security ### Subresource Integrity (A+ — 100/100) *No external resources* - **[PASS]** No external resources to protect ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. - **[PASS]** No sensitive files exposed ### Email Security (F — 30/100) *No DMARC* - **[WARNING]** No DMARC record found — Without DMARC, email receivers have no policy for handling authentication failures. ### Permissions-Policy (D — 40/100) *No header set* - **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (F — 0/100) *6.6 MB transferred, 232 requests* - **[CRITICAL]** Page weighs 22.1 MB (6.6 MB transferred) - **[WARNING]** JavaScript is 4.9 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts. - **[WARNING]** Images are 1.3 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[WARNING]** 232 HTTP requests — consider bundling or reducing — Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests. - **[INFO]** Estimated 1.4 g CO2 per page load ### Third-Party Impact (D — 50/100) *93% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 93% of page weight (6.1 MiB of 6.6 MiB) - **[PASS]** Third-party blocking time is low (0 ms) ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (B — 70/100) *37 images, 0 KB saveable* - **[WARNING]** https://ssl.cdn-redfin.com/cop-assets/prod/hpwidge... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (F — 20/100) *22715ms total JS execution* - **[WARNING]** https://22af5ed32a4a.edge.sdk.awswaf.com/22af5ed32...: 5899ms CPU time - **[WARNING]** https://prod.cdn-redfin.com/bundles/customer-pages...: 3585ms CPU time - **[WARNING]** Unattributable: 2593ms CPU time - **[WARNING]** https://www.redfin.com/: 1869ms CPU time - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-928P...: 1457ms CPU time - **[WARNING]** Third-party scripts: 20571ms (91% of total) ### Font Loading (A+ — 100/100) *2 fonts (29 KB)* - **[INFO]** 2 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (F — 20/100) *59 scripts, 1.4 MB unused* - **[WARNING]** https://22af5ed32a4a.edge.sdk.awswaf.com/22af5ed32...: 256 KB unused (51%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://prod.cdn-redfin.com/bundles/customer-pages...: 199 KB unused (63%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://prod.cdn-redfin.com/bundles/customer-pages...: 160 KB unused (45%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://prod.cdn-redfin.com/bundles/customer-pages...: 96 KB unused (39%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://prod.cdn-redfin.com/bundles/customer-pages...: 87 KB unused (54%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 1.4 MB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *No optimization needed* - **[PASS]** No resource hint issues ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (A — 90/100) *3 links checked, 1 healthy, 2 broken* - **[WARNING]** 1 of 3 links are healthy - **[WARNING]** Broken link: https://www.redfin.com/logo.png — Found in . Returns HTTP 404. - **[WARNING]** Broken link: https://www.redfin.com/graphic.png — Found in . Returns HTTP 404. ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (F — 0/100) *No Open Graph tags found — social sharing previews will be generic.* - **[WARNING]** No Open Graph meta tags found — Without og:title, og:description, and og:image, social media platforms will generate a generic preview when your page is shared. ### Structured Data (C — 40/100) *No structured data (JSON-LD) found.* - **[INFO]** No structured data (JSON-LD) found — Adding structured data helps search engines understand your content and can enable rich results. --- ## Infrastructure ### DNS Records (A — 85/100) *4 A records, 39 ms lookup* - **[PASS]** Resolves to 4 IPv4 address(es) - **[INFO]** No IPv6 (AAAA) records - **[WARNING]** CNAME record at zone apex — A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead. - **[PASS]** 4 nameserver(s) configured - **[INFO]** No MX records — email not configured via DNS - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[INFO]** No SPF record found in TXT records — SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'. - **[PASS]** DNS resolution time: 39 ms ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (C — 60/100) *No IPv6 support* - **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity. ### Crawlability (A — 85/100) *robots.txt present, no sitemap* - **[PASS]** robots.txt is present - **[INFO]** No sitemap.xml found — A sitemap helps search engines discover and index your pages more efficiently. - **[PASS]** robots.txt references sitemap ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *redfin.com — via GoDaddy Corporate Domains, LLC, 26 years, 3 months old, hosted on AWS* - **[PASS]** Domain registered until May 2, 2027 (1 years remaining) - **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it. - **[PASS]** Registrar: GoDaddy Corporate Domains, LLC - **[PASS]** Hosting: AWS --- ## Compliance ### WCAG Compliance (A+ — 100/100) *No testable criteria* ### Cookie Consent & Privacy (A — 85/100) *No consent signals detected* - **[WARNING]** No privacy policy link detected — A privacy policy page is recommended for transparency and may be legally required. - **[PASS]** Terms of service link found - **[INFO]** No cookie consent banner detected - **[PASS]** 7 cookie(s) set on initial load (functional) - **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance. ### Language & i18n (A — 90/100) *Lang attribute present* - **[PASS]** attribute is present - **[PASS]** value is valid - **[INFO]** No Content-Language HTTP header - **[INFO]** Language signals are inconsistent — The attribute and Content-Language header should agree. ### Readability & Typography (A+ — 100/100) *Font sizes and tap targets checked* ### Viewport Configuration (F — 30/100) *No viewport meta tag* - **[CRITICAL]** No viewport meta tag found — Without a viewport meta tag, the page will not render correctly on mobile devices. ### Third-Party Trackers (A+ — 100/100) *No third-party trackers detected* - **[PASS]** No third-party trackers detected --- ## Legal ### Legal Page Ecosystem (F — 0/100) *0 of 7 expected legal pages detected* - **[WARNING]** Privacy Policy not detected — No link matching common Privacy Policy URL patterns or link text was found. Most websites are expected to have a Privacy Policy, especially those collecting user data. - **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data. - **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data. - **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data. - **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data. - **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data. - **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data. ### Copyright Notice (C — 55/100) *No copyright notice detected* - **[INFO]** No copyright notice detected — No copyright notice detected in the page content. While not legally required in most jurisdictions (copyright exists automatically), a notice is standard practice and signals site ownership. ### Regulatory Indicators *0 regulatory indicator(s) detected* - **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments. - **[INFO]** No specific regulatory indicators detected — No strong signals for GDPR, CCPA, ADA, PCI, HIPAA, or COPPA were found. This does not mean these regulations don't apply — it means we didn't detect common technical indicators. ### Third-Party Data Sharing *0 third-party service(s) detected* - **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows. - **[INFO]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts. ### Compliance Badges (C — 55/100) *0 compliance badge(s) detected* - **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges. --- ## Availability ### CDN & Delivery (A — 85/100) *AWS CloudFront (Miss from cloudfront)* - **[PASS]** Site is served via AWS CloudFront CDN (edge: SFO53-P1) - **[INFO]** CDN cache status: Miss from cloudfront ### HTTP Caching (D — 40/100) *no-store (uncacheable)* - **[INFO]** Cache-Control: no-store prevents all caching — Intentional for dynamic content, but increases server load for every page view. - **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators. ### Transport Security (B — 75/100) *HTTP/3, HSTS, and TLS version analysis* - **[INFO]** HTTP/3 (QUIC) not advertised — HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it. - **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks. - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (D — 45/100) *1 landmarks* - **[CRITICAL]** No
landmark found — Screen reader users cannot quickly navigate to the primary content. Wrap your main content in
. - **[WARNING]** No